Toggle-actuated pivoted jaw wrench



March 4, 1952 c. ADEN 2,587,673

TOGGLE-ACTUATED, PIVOTED JAW WRENCH Filed July 29, 1950 175912 39.4 .Ffgfi 1 345 6442-s E 122 23;

(Pu/1M Gttorneg Patented Mar. 4, 1952 TOGGLE-ACTUATED PIVOTED J AW WRENCH Clarence E. Aden, Adams, Nebr.

Application July 29, 1950, Serial No. 176,646

1 Claim. 1

This invention relates to improvements in toggle-actuated, pivoted jaw wrenches of a, type similar to that disclosed in my previous application for a patent bearing the Serial Number 4,977, filed January 29, 1948. An object of the invention is to provide a device of the type havin jaw means primarily actuated by a screw mechanism and secondarily augmented by a simple toggle lever means for increasing the holdin pressure of the wrench jaws.

Another object of the invention is to provide a device of the type which will have a simple toggle mechanism coupled with the lever to increase the pressure of the grip of said jaws.

Other and further objects of the invention will appear as the description proceeds, reference being had to the accompanying drawing, in which:

Fig. 1 is a side view partly in elevation and partly in section of a wrench embodying the invention.

Fig. 2 is a fragmentary view similar to Fig. 1 showing the lever and related parts in open position.

Fig. 3 is a rear view in elevation of the wrench.

Fig. 4 is a view on line 4-4 of Fig. 2.

Fig. 5 is a view on line 5-5 of Fig. 2.

Referring more particularly to the drawing, the numeral I refers to the body of the wrench, having a fixed jaw II extending at an obtuse angle from oneend thereof, and provided at its opposite end with its integral tubular portion I2 having a reduced annulus at I3 thereof. The tubular portion I 2 houses an internally threaded sleeve I4 integral with a reduced portion I journaled in the annulus I3 and having at its outer end disposed exteriorly of the housing I2, the knurled knob I6. The internally threaded sleeve I 4 is rotatable freely within the housing I2 and is in constant mesh with a threaded element I I formed integrally with the pivot head I8 which latter is slideable longitudinally in the body I0. A handle I9 is journaled on a pin held at 2I of the pivot head I8. A movable jaw 22 has the bifurcated shank portions 23 and 24 which are pivoted by means 25 and 26 to the toggle plates 21 and 28 which latter are connected by the pivot pin 29 to the lever IS. A guide pin 30 prevents lateral movement of the jaw 22 in its longitudinal travel. A rod spring 3| has the legs 32 and 33 anchored against portion of the head I8 and with the head of its long arm 34 exerts a pressure outwardly against the movablej aw 22 between the bifurcated portions 23 and 24 of the shank thereof.

In use, the approximate desired relative positions of the jaws I I and 22 is regulated by rotation 2 of the knob I6. The wrench is then applied to the work with the lever I 9 in outwardly extended or open position as shown in Fig. 2. The lever I9 is then compressed toward the housing I 2. The handle I9 will then push the pin 29 handlewise forcing the toggle plates 21 and 28 to push handlewise against the pivot members 25 and 26 thus pulling the bifurcated shank portions 23 and 24 inwardly of the body I 0 and drawing the movable jaw 22 toward the fixed jaw I I and by this means tightening said jaws.

It will be understood that the device is capable of many modifications in structure and design, without departing from the spirit of the invention, within the scope of the appended claim.

Having thus described the invention, what is claimed and desired to be secured by Letters Patent of the United States, is:

A wrench comprising a body portion forming a chamber open endedly and at the back thereof, the frontal wall thereof bein longitudinally slotted, a fixed jaw angularly disposed on the open end of said body portion, a tubular housing integrally formed on the opposite end of said body, an internally threaded sleeve held in said tubular portion for free rotation therein, a knob integral therewith disposed exteriorly of said tubular portion for rotation of said sleeve, a pivot head movable longitudinally in said chamber, an integral screw fixed to said pivot head and in constant mesh within said sleeve, a lever pivotally connected with said pivot head, a pivoted jaw held for longitudinal movement between the side Walls of said chamber, a bifurcated shank integral with said movable jaw, a pair of toggle plates pivotally connected within the bifurcations of said shank, and a pivotal connection at the opposite end of said toggle plates medially between the pivot point of said lever and the shank ends.

CLARENCE E. ADEN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,280,405 Collison et al Oct. 1, 1918 2,312,947 Westman Mar. 2, 1943 2,313,270 Sapp Mar. 9, 1943 2,385,654 Seashore Sept. 25, 1945 2,464,472 Ward et al Mar. 15, 1949 2,500,590 Ward et a1 Mar. 14, 1950 2,533,817 Kaskinen Dec. 12, 1950 

